Homework Practice

Printable assignment

Final Assessment: Water: A Precious Resource

Section A: Key Concepts

Question 1mcq

Which habit conserves water at home?

A.Turning off the tap while brushing teeth

B.Letting taps run continuously

C.Washing vehicles with a running hose

D.Ignoring leaking taps

Question 2mcq

Why is drip irrigation water-efficient?

A.It floods the whole field deeply.

B.It supplies water near plant roots with less wastage.

C.It sprays water mostly onto roads.

D.It prevents plants from absorbing water.

Question 3mcq

Which action should be repaired first to reduce daily water loss?

A.A dry notebook

B.A closed water bottle

C.A leaking tap dripping all day

D.A clean empty bucket

Question 4mcq

A family uses bucket bathing instead of long showers. Which idea does this show?

A.Groundwater pollution

B.Dispersion of light

C.Electric heating effect

D.Responsible reduction of water use

Question 5mcq

Which option is not a water conservation method?

A.Leaving the tap open while washing dishes

B.Reusing water for gardening when safe

C.Using low-flow fixtures

D.Harvesting rainwater

Question 6mcq

What is the main purpose of rainwater harvesting?

A.Convert rain into salt water

B.Collect and store or recharge rainwater for later use

C.Stop clouds from forming

D.Make groundwater disappear.

Section B: Applications

Question 7mcq

A rooftop pipe carries rainwater into a recharge pit. What is this an example of?

A.Sewage treatment only

B.Dispersion of white light

C.Rainwater harvesting

D.Pollination by insects

Question 8mcq

Why should leaves and dirt be filtered before water enters a storage tank?

A.To make the water vanish

B.To turn rainwater into petrol

C.To stop all recharge.

D.To keep stored rainwater cleaner and reduce clogging

Question 9mcq

Which location is best for a recharge structure?

A.An area where rainwater can collect and seep safely into soil

B.A completely sealed plastic sheet

C.A busy road drain full of sewage

D.A closed metal cupboard

Question 10mcq

A student says rainwater harvesting is useful only in villages. What is the correction?

A.It is illegal in all cities.

B.It can help both urban and rural areas manage water.

C.It only works inside forests.

D.It makes rain stop falling.

Question 11mcq

Which choice shows responsible water management by a community?

A.Pumping groundwater without limit

B.Covering all open land with concrete

C.Repairing leaks, harvesting rainwater and monitoring groundwater use

D.Dumping waste into water bodies

Question 12mcq

Why should industries treat wastewater before releasing it?

A.To increase groundwater depletion

B.To remove oxygen from rivers

C.To make water unusable deliberately

D.To prevent pollution of water sources

Section C: Observations and Data

Question 13mcq

A town has low rainfall and falling groundwater. Which plan is best?

A.Combine water-saving rules with rainwater harvesting and careful groundwater use

B.Dig more wells without limit

C.Use drinking water to wash roads daily

D.Ignore leaks until summer ends

Question 14mcq

Which data would help decide if water management is improving?

A.Only the colour of school walls

B.Monthly water use and groundwater level readings

C.Number of mirrors in homes

D.Length of roads with no rainfall data

Question 15mcq

Why is protecting wetlands helpful for water management?

A.Wetlands destroy all groundwater.

B.Wetlands are made only of salt.

C.Wetlands can store water, support recharge and reduce flooding.

D.Wetlands prevent all rainfall.

Question 16mcq

A school uses

500\,L

of water daily. A leaking tank wastes

50\,L

daily. What percent is wasted?

1\%

25\%

50\%

10\%

Question 17mcq

A colony must choose one first step before summer. Which choice gives immediate conservation?

A.Fixing major leaks in pipelines

B.Painting the water tank blue

C.Adding more decorative fountains

D.Removing all water meters.

Question 18mcq

A rainwater harvesting tank stores

2000\,L

after each heavy rain. What is the best use of this data?

A.Prove oceans have no salt

B.Estimate how much tap water demand can be reduced.

C.Measure speed of light

D.Find the image distance in a mirror.

Section D: Reasoning Challenge

Question 19mcq

Which argument best supports limiting groundwater pumping in a dry season?

A.Pumping makes light bend more.

B.Groundwater is never connected to wells.

C.Pumping faster than recharge can lower the water table.

D.Dry seasons increase groundwater automatically.

Question 20mcq

A student has two options: wash a car with a hose or a bucket. Which is the better water decision and why?

A.Use a hose because running water always saves more.

B.Use both because more water cleans faster with no impact.

C.Do not wash with any water ever, even for safety needs.

D.Use a bucket because the amount of water is easier to control.

Question 21mcq

A family reduces daily use from

600\,L

480\,L

. How much water is saved each day?

120\,L

80\,L

1080\,L

20\,L

Question 22mcq

A borewell is used more every year, but rainfall recharge is unchanged. What will most likely happen?

A.The water table must rise.

B.The water table may fall.

C.The aquifer will become a forest.

D.The water cycle will stop.

Question 23mcq

Which school rule best supports water conservation?

A.Students leave taps open after lunch.

B.Water tanks overflow daily.

C.Students report leaking taps immediately.

D.Gardens are flooded at noon.

Question 24mcq

Why is rooftop rainwater harvesting useful in cities with concrete surfaces?

A.It removes the need for all drinking water treatment.

B.It makes roads absorb no water.

C.It converts salt water into clouds.

D.It captures rain that might otherwise run off quickly.